Yes, a user role can be used to extended access to "Administration" and "Configuration" sections for any user type.

No, user roles cannot be used to extend frontend access beyond what is available for the user type.

View template entities

Link template to host

Modify template entities

Change the database query to return only one value and create multiple such items

Create a database monitor item with this query and multiple dependent items for each metric

Create a database monitor item with this query and multiple simple check items with tags matching metric names

By restarting zabbix server

By deleting the item

By pausing the escalation by selecting "Pause action"

Through user groups

Through media types

Through user roles

By specifying it in the Zabbix configuration file

No, access to any frontend section can not be revoked

Yes, by restricting access to frontend sections in user roles

Yes, by restricting access to frontend section in user groups

Yes, but only media types of the "Email" type.

No, media types cannot be tested.

No, maintenance can only suppress all problems on a host.

Yes, maintenance can suppress only those problems that match specific tags.

All inventory field values can be modified manually and will not be overwritten by items

All inventory field values can be modified manually; however, at the next item update interval, the inventory fields populated by items will be overwritten.

You can only modify inventory fields not populated by the items.